Sumatif Harian Stoikiometri XI
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
mi'rojul asyarati
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Jika diketahui Ar : Mg = 24; S = 32; O = 16; H = 1, maka Mr dari MgSO4 . n H2O adalah …..
120 x 18 n
120 + 18 n
138 n
120 n
102n
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Pembakaran gas asetilena diukur pada suhu 27oC dan tekanan 2 atm dan dihasilkan 3,6 gram uap air (Mr= 18) menurut reaksi: 2C2H2(g) + 5O2(g) ---> 4CO2(g) + 2H2O(g). Volume gas asetilena yang terbakar adalah ....
2,24 liter
4,48 liter
2,46 liter
4,92 liter
24,6 liter
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Sebanyak 3,01 x 1023 atom besi direaksikan dengan asam sulfat berlebih menurut reaksi (belum setara): Fe(s) + H2SO4(aq) ---> Fe2(SO4)3(aq) + H2(g). Pada suhu dan tekanan tertentu 1 gram gas O2(Mr = 32) mempunyai volume 1liter, maka pada kondisi yang sama jumlah volume gas H2 yang terjadi adalah ....
4 liter
8 liter
16 liter
24 liter
36 liter
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Jika 4,4 gram propana dibakar sempurna menurut reaksi:
C3H8(g) + 5O2(g) ---> 3CO2(g) + 4H2O(g)
maka volume gas karbon dioksida yang dihasilkan pada STP adalah….
(Ar: C = 12; H = 1)
1,12 liter
2,24 liter
2,75 liter
6,72 liter
7,46 liter
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Sebanyak 10,8 gram Aℓ(Ar Aℓ =27) direaksikan dengan larutan HCℓ sesuai persaman reaksi:
2Aℓ(s) + 6HCℓ (aq) ---? 2 AℓCℓ3(aq) + 3H2(g).
Gas H2 yang dihasilkan pada STP adalah….
13,44 liter
6,72 liter
4,48 liter
3,36 liter
2,24 liter
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diketahui Ar: Cu = 63,5; O = 16; H = 1; S = 32. Mr senyawa CuSO4. 5H2O adalah ….
249,5
185,5
159,5
164,5
90
7.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diketahui Ar: C = 12; N = 14; O = 16; H = 1; maka massa dari 0,5 mol urea CO(NH2)2 adalah ….
22 gram
29 gram
30 gram
44 gram
60 gram
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